Short-circuit jumper wire

Abstract

The utility model discloses a short-circuit jumper wire, which comprises a jumper wire seat and a jumper wire cap, and is characterized in that the jumper wire seat comprises a base and two contact pins, and the two contact pins are fixed on the base; the jumper cap comprises a shell and a short circuit block, and the short circuit block is assembled in the shell; when the jumper cap is connected with the jumper seat in an inserted mode, the contact pin is inserted into a jack formed by the short circuit block and the shell. A fastening column is arranged on the base, a fastening hole is formed in the shell, and the shape and the position of the fastening column correspond to those of the fastening hole; when the jumper cap is inserted into the jumper seat, the fastening column is inserted into the fastening hole, and the clamping force of the fastening hole to the fastening column is used for preventing the jumper cap from loosening. The short-circuit jumper provided by the utility model is provided with the fastening structure, so that the jumper cap is effectively prevented from loosening, the reliability is improved, and the safe connection of a circuit is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board connection devices, and particularly relates to a shorting jumper wire. Background Art

[0002] Shorting jumper wires are widely used in circuit board design to control the on-off of circuits. As Figure 1 shown in the existing shorting jumper wire structure, it includes a jumper seat 10 and a jumper cap 20. As shown in Figure 1 (a), the jumper seat 10 includes a base 110 and two pins 120, and the pins 120 are fixed on the base 110; as shown in Figure 1 (b), the jumper cap 20 includes a housing 210 and a shorting block 220, and the shorting block 220 is assembled in the housing 210; the base 110 and the housing 210 are made of insulating plastic, and the pins 120 and the shorting block 220 are made of metal.

[0003] As Figure 2 shown in the existing shorting block structure of the jumper cap, after the shorting block 220 is assembled with the housing 210, two metal jacks are formed. As Figure 3 shown in the existing shorting state of the shorting jumper wire, in actual use, the jumper seat 10 is welded on the circuit board. When the jumper cap 20 is inserted onto the jumper seat, the two pins 120 are respectively inserted into the two metal jacks to achieve shorting.

[0004] The problem of the existing technology is that the clamping force of the jumper cap is insufficient. In places with strong mechanical vibration or when applied to mobile devices, the jumper cap is likely to become loose, resulting in a circuit break on the circuit board and causing failures of electromechanical devices. CN207116820U discloses a technical solution of adding a fastening bolt on the jumper cap to prevent loosening, but the operation is inconvenient and it is difficult to promote.

[0005] As Figure 4 shown in the existing non-shorting state of the shorting jumper wire, when shorting is not required, the jumper cap 20 is usually inserted onto one of the pins 120 to prevent loss. Another problem of the existing technology is that in this state, the clamping force is even smaller and the jumper cap is likely to become loose. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a shorting jumper wire to prevent the jumper cap from becoming loose in places with strong mechanical vibration or when applied to mobile devices.

[0007] To achieve the above object, the solution of the utility model is:

[0008] A short - circuit jumper includes a jumper base and a jumper cap. The jumper base includes a base and two pins, and the two pins are fixed on the base; the jumper cap includes a housing and a short - circuit block, and the short - circuit block is assembled in the housing; when the jumper cap is plugged into the jumper base, the pins are inserted into the jack formed by the short - circuit block and the housing; a fastening post is provided on the base, and a fastening hole is provided on the housing, and the shapes and positions of the fastening post and the fastening hole correspond to each other; when the jumper cap is plugged onto the jumper base, the fastening post is inserted into the fastening hole.

[0009] The above - mentioned fastening post is arranged at the center of the base along the insertion direction, and the fastening hole is arranged at the center of the housing along the insertion direction.

[0010] Two limiting holes are symmetrically arranged on both sides of the above - mentioned housing. The two limiting holes are coplanar with the fastening post, and the distance and cross - sectional shape between the two limiting holes are the same as those of the two pins; when the short - circuit jumper does not need to be short - circuited, the fastening post is inserted into the fastening hole, and the two pins are respectively inserted into the limiting holes.

[0011] The above - mentioned limiting hole is a through - hole, and its depth is lower than the height of the pin protruding from the base.

[0012] A protruding part is provided at the end of the above - mentioned fastening post.

[0013] A chamfer is provided at the edge of the above - mentioned protruding part.

[0014] The above - mentioned fastening post is a cylinder, and a slot is arranged along the axial direction; the fastening hole is a round hole, and the aperture of the corresponding part of the fastening hole and the protruding part is increased.

[0015] The distance between the above - mentioned two pins is 5.08 mm.

[0016] The distance between the above - mentioned short - circuit block and the edge of the housing is not less than 1 mm.

[0017] After adopting the above - mentioned scheme, in the present utility model, a fastening post is provided on the base of the jumper base, and a fastening hole is provided on the housing of the jumper cap. The shapes and positions of the fastening post and the fastening hole correspond to each other, and the fastening post and the fastening hole increase the clamping force between the jumper cap and the jumper base. When the circuit needs to be short - circuited, the jumper cap can be inserted onto the jumper base through the pins and the fastening post; when the circuit does not need to be short - circuited, the jumper cap can be inserted onto the jumper base only through the fastening post; the clamping force of the fastening hole on the fastening post can prevent the jumper cap from loosening.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] (1) The short - circuit jumper of the present utility model is provided with a fastening structure, which effectively prevents the jumper cap from loosening, improves the reliability, enables the short - circuit jumper to adapt to places with strong mechanical vibration and mobile devices, and ensures the safe connection of the circuit.

[0020] (2) When the short - circuit jumper of the present utility model is not required for short - circuiting in the circuit, the jumper cap can still be inserted into the jumper base through the fastening post to prevent the loss of the jumper cap. Description of the Drawings

[0021] Figure 1 is the structure diagram of the existing short - circuit jumper;

[0022] Among them, (a) is the structure diagram of the jumper base, and (b) is the structure diagram of the jumper cap;

[0023] Figure 2 is the structure diagram of the short - circuit block of the existing jumper cap;

[0024] Figure 3 is the short - circuit state diagram of the existing short - circuit jumper;

[0025] Figure 4 is the non - short - circuit state diagram of the existing short - circuit jumper;

[0026] Figure 5 is the structure diagram of a short - circuit jumper according to an embodiment of the present utility model;

[0027] Among them, (a) is the structure diagram of the jumper base, and (b) is the structure diagram of the jumper cap;

[0028] Figure 6 is the short - circuit action diagram of a short - circuit jumper according to an embodiment of the present utility model;

[0029] Figure 7 is the structure diagram of the short - circuit state of a short - circuit jumper according to an embodiment of the utility model;

[0030] Figure 8 is the non - short - circuit state structure diagram of a short - circuit jumper according to an embodiment of the present utility model;

[0031] Figure 9 is the side - view sectional view of the short - circuit state of a short - circuit jumper according to an embodiment of the present utility model;

[0032] Figure 10 is the top - view sectional view of the short - circuit state of a short - circuit jumper according to an embodiment of the present utility model;

[0033] Description of the Reference Numerals:

[0034] 1. Jumper base; 11. Base; 12. Pin;

[0035] 111. Fastening post; 1111. Protrusion; 1112. Groove;

[0036] 2. Jumper cap; 21. Shell; 22. Short - circuit block; 211. Fastening hole; 212. Limiting hole;

[0037] 10. Jumper base; 110. Base; 120. Pin;

[0038] 20. Jumper cap; 210. Housing; 220. Shorting block. Specific embodiments

[0039] The technical solutions and beneficial effects of the present utility model will be described in detail below in conjunction with the accompanying drawings.

[0040] As Figure 5 shown, the present utility model provides a shorting jumper, including a jumper base 1 and a jumper cap 2. Among them, as Figure 5 (a) shows, the jumper base 1 includes a base 11 and two pins 12. The pins 12 are fixed on the base 11. Then, as shown in (b), the jumper cap 2 includes a housing 21 and a shorting block 22. The shorting block 22 is assembled in the housing 21; the materials of the base 11 and the housing 21 are insulating plastics, and the materials of the pins 12 and the shorting block 22 are metals. The distance between the two pins 12 is 5.08 mm, and the distance from the shorting block 22 to the edge of the housing 21 is 1 mm.

[0041] The improvement of the present utility model lies in that: a fastening post 111 is provided on the base 11, and a corresponding fastening hole 211 is provided on the housing 21. The shapes and positions of the fastening post 111 and the fastening hole 211 correspond to each other. When the jumper cap 2 is inserted onto the jumper base 1, the fastening post 111 is inserted into the fastening hole 211 and fastened, thereby increasing the clamping force between the jumper base 1 and the jumper cap 2 and preventing the jumper cap 2 from loosening.

[0042] In this embodiment, as shown in Figure 5 (a) and (b), the fastening post 111 is arranged at the center of the base 11 along the insertion direction, the fastening hole 211 is arranged at the center of the housing 21 along the insertion direction, the fastening post 111 is a cylinder, the fastening hole 211 is a round hole, and the shapes and positions of the fastening post 111 and the fastening hole 211 correspond to each other. The symmetrical structure is convenient for cooperation; a protruding portion 1111 is provided at the end of the fastening post 111, and a chamfer is provided at the edge of the protruding portion 1111. When the jumper cap 2 is inserted onto the jumper base 1, as shown in Figure 6 , the protruding portion 1111 is inserted into the fastening hole 211 and fastened, which can increase the clamping force of the fastening hole 211 on the fastening post 111, and the chamfer at the end is convenient for the insertion and extraction of the jumper cap 2.

[0043] As a preferred embodiment of the present utility model, as shown in Figure 5 (a), a slot 1112 is provided along the axial direction of the fastening post 111, the fastening hole 211 is a through hole, and the aperture of the corresponding part thereof with the protruding portion 1111 is increased. When the jumper cap 2 starts to be inserted onto the jumper base 1, as shown in Figure 6As shown, the slot 1112 is compressed. After the jumper cap 2 is inserted into the jumper base 1 in place, the slot 1112 rebounds, making it convenient to insert and remove the jumper cap 2 by utilizing the elasticity of the plastic. At the same time, since the aperture of the corresponding part of the fastening hole 211 and the protruding part 1111 increases, a snap-fit structure is formed between the fastening post 111 and the fastening hole 211, so that while the jumper cap 2 is easy to insert and remove, it also avoids loosening.

[0044] As a preferred embodiment of the present utility model, in cooperation with Figure 5 (b), two limiting holes 212 are symmetrically arranged on both sides of the housing 21. The two limiting holes 212 are coplanar with the fastening post 111, and their spacing and cross-sectional shape are the same as those of the two pins 12. Thus, when the circuit does not need to be short-circuited, the jumper cap 2 can be fixed on the jumper base 1 by inserting the fastening post 111 into the fastening hole 211 and the pin 11 into the limiting hole 212 at the same time. In this way, the position of the pin 12 can be restricted, and a clamping force can be provided to prevent the jumper cap 2 from loosening.

[0045] Furthermore, chamfers can be provided at the edges of the limiting holes 212 to facilitate the insertion of the pins 12.

[0046] Furthermore, the limiting holes 212 are through holes, and the depth is lower than the height of the pins 12 protruding from the base 11. This can facilitate observing the position of the pins 12 and visually judging the connection state.

[0047] As a preferred embodiment of the present utility model, the spacing between the two pins 12 is 5.08 mm, which is widely used in circuit board design and is conducive to popularization.

[0048] As a preferred embodiment of the present utility model, the distance between the shorting block 22 and the edge of the housing 21 is 1 mm, ensuring the creepage distance and avoiding accidental short circuits caused by the accidental dropping of the jumper cap 2 onto the circuit board.

[0049] Figure 7 This is a structural diagram of the short-circuit state of a shorting jumper of the present utility model. Figure 8 This is a structural diagram of the non-short-circuit state. After the housing 21 of the shorting cap 2 and the shorting block 22 are assembled, two metal jacks are formed. Corresponding to Figure 7 、 Figure 8 , there are two insertion positions when the jumper cap 2 is inserted onto the jumper base 1. In actual use, the jumper base 1 is soldered on the circuit board, and the jumper cap 2 is inserted into the corresponding position according to the circuit design. When the circuit needs to be short-circuited, as Figure 7 shown, the pins 12 are inserted into the metal jacks of the jumper cap 2, and the fastening posts 111 are inserted into the fastening holes 211. At this time, the clamping force between the fastening posts 111 and the fastening holes 211 and the clamping force between the pins 12 and the metal jacks can prevent the jumper cap 2 from loosening. When the circuit does not need to be short-circuited, as Figure 8As shown, the pin 12 is inserted into the limit hole 212, and the fastening post 111 is inserted into the fastening hole 211. The clamping force between the fastening post 111 and the fastening hole 211 and the clamping force between the pin 12 and the limit hole 212 can prevent the jumper cap 2 from loosening.

[0050] Figure 9 This is a side sectional view of the short - circuit state of the short - circuit jumper of the present utility model, Figure 10 and a top - view sectional view. Figure 9 shows the structural features and the mating relationship between the fastening post 111 and the fastening hole 211. The fastening post 111 is a cylinder, and a cylindrical protrusion 1111 is provided at the end. Chamfers are provided on both side edges of the protrusion 1111. A slot 1112 is axially provided on the fastening post 111. The fastening hole 211 is a circular through - hole, and the hole diameter increases at the corresponding part of the protrusion 1111, and a chamfer is provided at the hole - diameter change position. Figure 10 shows the structural features of the protrusion 1111 at the end of the fastening post 111. The cross - section of the protrusion 1111 is divided into two symmetrical parts by the slot 1112. For easy insertion and extraction, both sides of the slot of the protrusion 1111 are thinned axially. When the fastening post 111 starts to be inserted into the fastening hole 211, the plastic elasticity is used to compress the slot 1112, and the protrusion 1111 contracts and smoothly enters the fastening hole 211. After the fastening post 111 is inserted into the fastening hole 211 in place, the hole diameter of the corresponding part of the fastening hole 211 is large, the slot 1112 rebounds, and the fastening hole 211 clamps the protrusion 1111. The above - mentioned snap - type structure between the fastening post 111 and the fastening hole 211 prevents the jumper cap 2 from loosening. In actual use, the state of the short - circuit jumper may need to be switched. Therefore, chamfers are provided on both side edges of the protrusion 1111 to facilitate the insertion and extraction of the jumper cap 2, and the through - hole structure of the fastening hole 211 is convenient for processing.

[0051] The short - circuit jumper proposed by the present utility model is provided with a fastening structure, which solves the technical problem that the jumper cap is prone to loosening in the prior art; the proposed short - circuit jumper has two plug - in positions, corresponding to the short - circuit state and the non - short - circuit state respectively. In both states, loosening can be effectively avoided and can be visually distinguished; the proposed short - circuit jumper is convenient to operate and has reliable connection, and is suitable for popularization.

[0052] Considering the diversity of use requirements and environments, measures such as pitch adjustment, tolerance control, plating treatment, and chamfer transition in the embodiments of the present utility model may be necessary, which need to be considered in combination with actual situations and will not be elaborated here.

[0053] The above has introduced the embodiments of the present utility model in detail. Specific embodiments are used to elaborate the principle and implementation manner of the present utility model to help understand the core idea of the present utility model. At the same time, changes or deformations made based on the specific implementation manner and application scope of the present utility model all fall within the protection scope of the present utility model.

Claims

1. A short-circuit jumper, comprising a jumper seat and a jumper cap, wherein the jumper seat comprises a base and two pins, wherein the two pins are fixed on the base; the jumper cap comprises a shell and a short-circuit block, wherein the short-circuit block is assembled in the shell; when the jumper cap is plugged into the jumper seat, the pins are inserted into the jack formed by the short-circuit block and the shell; the characteristics are: The base is provided with a fastening column, and the shell is provided with a fastening hole. The shapes and positions of the fastening column and the fastening hole correspond to each other. When the jumper cap is inserted into the jumper seat, the fastening column is inserted into the fastening hole.

2. A short jumper as claimed in claim 1, characterized in that: The fastening column is arranged at the center of the base along the insertion direction, and the fastening hole is arranged at the center of the shell along the insertion direction.

3. A short jumper as claimed in claim 2, characterized in that: Two limiting holes are symmetrically arranged on both sides of the shell, the two limiting holes are coplanar with the fastening column, and the spacing and cross-sectional shape of the two limiting holes are the same as those of the two pins; when the short-circuit jumper does not need to be short-circuited, the fastening column is inserted into the fastening hole, and the two pins are respectively inserted into the limiting holes.

4. A short jumper as claimed in claim 3, characterized in that: The limiting hole is a through hole, and its depth is lower than the height of the pin extending out of the base.

5. A short jumper as claimed in claim 1, characterized in that: The end of the fastening column is provided with a protrusion.

6. A short jumper as claimed in claim 5, characterized in that: The edge of the protrusion is provided with a chamfer.

7. A short jumper as claimed in claim 6, characterized in that: The fastening column is a cylinder and is provided with a slot along the axial direction; the fastening hole is a circular hole, and the aperture of the corresponding part between the fastening hole and the protrusion is increased.

8. A short jumper as claimed in claim 1, characterized in that: The distance between the two pins is 5.08 mm.

9. A short jumper as claimed in claim 1, characterized in that: The distance between the short-circuit block and the edge of the housing is not less than 1 mm.

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